How long is the skin renewal cycle?

1, the metabolic cycle of skin, the popular and standard view is that the outermost stratum corneum is 28 days, it takes 14 days for a newborn cell to move from the basal layer to the transparent layer, and it takes 14 days for the stratum corneum to form and fall off. So the metabolic cycle is 28 days.

2. Metabolism is going on every day, but it is most active at 10: 00 ~ 2: 00 every night. With the change of age and the growth of years, metabolism will become slow and the cycle will be gradually extended to 60 days. All kinds of contact between skin and the outside world make dermal tissue naturally age, new cells gradually slow down, produce less and less collagen, and the metabolic cycle will become longer and longer, so wrinkles will deepen, so maintenance is particularly important.

3. Because cosmetics are smeared on the surface of stratum corneum, the function and state of stratum corneum have a great relationship with the choice of cosmetics. The stratum corneum contains about 10%-20% moisture. After hands and feet sweat or soak in water for a long time, the moisture in the stratum corneum increases, and the skin will wrinkle and turn white. When winter is dry, the moisture in the stratum corneum is reduced, and the skin is not only rough, but also chapped, and the skin moisture evaporates too quickly. At this time, apply appropriate cosmetics. If it is sensitive skin, the rash will be significantly reduced if the temperature is too low. In this case, it is necessary to protect the skin.

4. The dermis is under the epidermis, which is obviously divided into stages, and the convex and concave shape at the bottom of the epidermis is in close contact with the dermis. There are few cells in dermis, which are mainly composed of fibrous connective tissue, including collagen fibers, elastic fibers and reticular fibers, which have a very important relationship with the elasticity, luster and tension of skin. Skin aging, such as relaxation and wrinkling, occurs in the dermis.

Extended data:

How to improve skin metabolism

1, take more vitamins that help metabolism.

The most important thing to solve metabolic problems is nursing from the inside out, and taking more vitamins to help metabolism is a good way. For example, in addition to dairy products such as eggs, milk, cheese and butter, pasta is also rich in vitamin A. In addition, vitamin B2, nicotinic acid, vitamin B6, vitamin H, vitamin B 1, pantothenic acid, etc., which are beneficial to improving skin problems, are also effective if they are not ingested enough.

2. Don't worry about the effect.

In fact, the improvement of everything needs a certain process, and metabolism is no exception. Everyone's metabolic cycle is closely related to age and physique, which is probably the same as the menstrual cycle of women (about once every 28 days). Therefore, it is normal to insist on improving metabolism, and it has no effect in a short time. Don't worry or be anxious. Therefore, for the time being, two cycles (56 days) are the shortest cycle of curative effect, and during this period, I will work hard to improve my skin.

3. Grasp the opportunity of skin condition and promote the regeneration of new cutin.

Skin resistance is weakened, oil secretion is excessive, and old keratin is difficult to regenerate. When you encounter these problems, promoting keratin regeneration can help you get rid of the trouble. In fact, this is also one of the secrets. However, when your skin is too fragile, it is more difficult to promote keratin regeneration. Therefore, it is a better method to grasp the skin condition in time and improve it. Of course, it is worth noting that the skin will become fragile and sensitive after the new keratin is regenerated. At this time, it is very important to apply sunscreen to avoid ultraviolet radiation.

In daily life, simple skin care can promote skin metabolism, thus achieving the goal of beauty beauty. Therefore, female friends who love beauty, don't delay the best promotion opportunities. As long as they feel a little uncomfortable, they should take care of and improve at once.

References:

Baidu encyclopedia-skin metabolism